480361 Facebook Login Error Fix (Authentication Problem) - QUICK

*** THIS PROJECT IS URGENT AND MUST BE COMPLETED WITHIN 1 DAYS OF PROJECT ACCEPTANCE. ***

*** PLEASE NOTE *** BUDGET IS $30 (MAX) AS THIS SHOULD BE VERY QUICK FOR SOMEONE EXPERIENCED. ****

HTML, PHP, JAVASCRIPT ETC REQUIRED

The facebook login plugin is currently not working on my forum, which can be found here ( you need to click on the facebook logo on the right, and you will need to test with your own facebook account):

[url removed, login to view]

To replicate the issue, you must first enter a facebook account and authorize it. It will then ask you to enter a username to join the forum (just enter any made-up user name) and click connect. This is where the problem occurs as it does not properly authenticate with facebook server (notice that the profile picture etc does not load), and therefore unable to log in the user.

I have all the necessary configurations setup on the server for facebook connect to work (PHP 4, PHP 5, cURL etc) and have set up the app ID and secret key correctly.

Furthermore, I recently tested the exact same script on a shared server, and it worked perfectly. Only on this VPS it does not work (which where my site is currently hosted).

Please note that the facebook plugin and the entire forum is from [url removed, login to view] (free download and open source)